Lymphoma presenting as a popliteal mass in a patient with rheumatoid arthritis.
A patient with HLA-B27 and rheumatoid factor positive rheumatoid arthritis presented with a painless swelling in his popliteal fossa. Clinical features were atypical for a Baker's cyst, and subsequent investigation showed this lesion to be a primary malignant lymphoma.
de Beer
J D
JD
University of Toronto Rheumatic Disease Unit, Department of Orthopaedic Surgery, Toronto, ON, Canada.
Bogoch
E R
ER
Smythe
H A
HA
D001172:Arthritis, Rheumatoid / Q000150:complications* / Q000276:immunology / Q000473:pathology; D003937:Diagnosis, Differential; D015796:HLA-B27 Antigen / Q000276:immunology; D006801:Humans; D008223:Lymphoma / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D011151:Popliteal Cyst / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D012217:Rheumatoid Factor / Q000276:immunology
D015796:HLA-B27 Antigen; D012217:Rheumatoid Factor